<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        console.log((1/3)===(1-2/3));

        console.log(Math.abs(1/3-(1-2/3))<0.0000001);

        let arr = [1, 2, 3, 4, 'hello', "str"];
        console.log(arr);
        // Person person=new Person(1,2,3,4,5);
        let  person={
            name:"mafu",
            age:2,
            tags:['1','abc','~']
        }

    </script>
</head>
<body>

</body>
</html>